Combination electric and coal boiler



Nov. 18, 1924.

C. R. KLINE COMBINATION ELECTRIC AND COAL BOILER Filed Feb. 14, 192s9555/5/55 2, 5 M .I l I l 35,5

Patented Nov. 18, 1924.

Y UNITED STATE-s PATEN r Ormes.

:mamans n. KLINE, or nEAnINe, PENNsYLvAn-IA.y

COMBINATION ELECTRIC AND COAL BOILER. I

Application led February 14, 1923. Serial No. 818,890;

composed of sections held in assembled posi tion by any suitable means`the interior of said sections being heated by a coal grate, while thewater legs or water spaces of the boiler are provided preferably on eachside with electrically heated units or elements,v which are constructedand supported, so as to provide for expansion and contraction withrespect to the boiler sections in a novel It further consists of a novelconstruction of a sectional boiler` havin'g the water legs or waterspaces provided with electrically heated units. whose outer ends areconstructed and insulated in a novel manner, the interior of saidsections bein'g provided with a coal grate, whereby either coal orelectricity may be employed independently or simultaneously as theheating medium or agent.

It further consists of a novel construction of an electrically heatedunit or element and a novel manner of assembling and/supporting the sameand its adiuncts with respect to the boiler sections to be heated.

It further consists of a novel manner of supporting theends of theelectrically7 heated unit, whereby the requisite expansion andcontraction is permitted and leakage of the water from the outer sectionof the boiler is prevented.

of construction and advantage, all as will be hereinafter set forth andpointed out in the claims. i p

For the purpose of illustrating my invention, I have shown in theaccompanying drawings forms thereof whichv are at present preferred byme,since they will give in practice satisfactory yandreliable results,although it is to be understood that the various instrumentalities ofwhich my invention consists can be variously arranged and It further.consists ofvother novel features to a horizontal or a organizedand thatmy invention is not limited to the precise arrangement and organizationof these instrumentalities as herein shown and described.

Figure 1 represents a perspective view of asectional electrically heatedboiler emb0dying my invention, the front boiler section being ysectionedvertically to show the collocation of the electrically heated unitswith' respect to thewater spaces or water legs of the boiler.

Figure 2 represents on an a section on line 2-2 Figure Figure 3represents, the outer end of the Figure 2, showingthe manner ofassembling the electrical heated unit and its casing, within the outerboiler section.

Figure 4 represents on an enlarged scale 1. on an enlarged scale,heating unit seenl 1n enlarged scale,-

a vertical` section on line 4-4 Figure 2, f

showing the manner of supporting the inner end ofthe casinfg of theelectrical heating element. I

Figure 5 represents a section on line 5 5 Figure 3.

Figure 6 showing the and its adiuncts.

represents a perspective view Figure 7 represents ab sectional view ot'-end of one of the electrically-heated units' the outer end of apheatingelement p' showing also an insulating covering ldoor therefor. t

Similar numerals of reference indicate corresponding parts.

Referring to the drawings It will be understood that my'invention,in-its broad aspects, is capable of adaptation saine in conjunction witha vertical sectional boiler, composed of a series of vertlcal sections,which are tied together by side rods,

vertical sectional boiler,. and in the present instance I have'shown theis customary. In illustrating the adaptation of my invention to thistype of boiler, I have shown a sectional boiler 1 as composed of thefront section 2, a rear section 3 andthe intermediate sections 4, thenumber of which latter may be increased or diminished according torequirements.

i the water communication between the varioussections is eiected bymeans of the side nipples 6, and the upper series of central nipples 7.Between the Water legs is lo cated the combustion chamber 8' having thegrate 9 and the ash pit 10; f

11 designates-ho'rlzontally disposed rods, which hold the varioussections in assembled position. In adapting the water holding sections,of the conventional type to my mvention, 'I preferably form on each sideu thereof the enlarged water holding chamber 12 in each Water leg, whichis effected by bulging out the outer Wall of the section, as indicatedat 13, and Within tihis chamber 12 on each side, I locate the heatingelement or unitv 1li-,which comprises the metal- -lic or other casing ortube 15, having its inner end closed as indicated at 16 and .sup-

upon the V-shaped lug or shelf 17, yvlnch ma be cast upon or secured tothe interior o the rear section 3. Within the tube 15, I locate the core18, which is'made of any suitable material and around this c0re, I Windone o r more of the resistance coils or electrically heated elements 19.The outer end of the tube is closed by the porcelain or othernon-conducting plug 20, which has 4the horizontal channels or passages21 andv 22 therein, which serve as conduits for the ends of theconductors and merge into the vertical passages 23 and 24', f

respectively, as will be understood from Figure 5. [The plug has a tightor driving fit in the outer end of the pipe or casing 15, .so that -airis excluded from the latter. Above or upon the outer end of 'thehorizontal pipe 15, I locate thev pair of vertical insulating pipes 25in which are located the terminals 26 and 27 of the conductors orA wireswhich form the heatingv element so that they will be properly insulatedand protected. It will be seen that the inner end of the casing 15, byreason of its manner ot support on the V-shapedshel 17, is free to moveslightly longitudinally to provide for expansion and contraction, and inorder to the casing seen in Figures 2 and 3, wherein the outer providefor expansion at the outer end of 15, I employ thc construct-ion end ofthe tube 15 is located in a stuiiing box composed ofthe gland 28 and thepackmg 29, it being apparent that Wirren said gland 28 is tightened,there will be no leakage of water from the front'section 2 and, at thesame. time, there will be provided means for permitting the expansion ofthe outer end of the tube 15 of the electrically heated element or unit14.

It will be understood that the conductors 26 and 27 are provided with anelectric i switch'cr button or controlling device of any suitable orconventional t pe, so that v heating coil or resistance 19 will at oncebecome highly heated, and by reason of its position Within the waterlegs or jackets 5 of` the boiler, the heat of the electrical elementsWill be instantly applied to the Water in the Water legs and aneffective circulation Will be at once created.

It Will thus be seen that by my invention I am enabled to heat asectional boiler of the conventional type either by electricity or coalor both simultaneously or independently and in case of the scarcity ofcoal, electricity which is usually available in modern homes, may beemployed solelyfas the heatin medium. 1 i

y my novel manner of supporting the i11- ner and outer ends of theelectrical heating units or elements,`it is apparent that ampleprovision is made for expansion or contract'pn of the heating unit orelement, and by t e of t e front sectionprov1sion is made for ermittingexpansionr outwardly of the heating elements, and, at the same time,prevent- Y ing any leakage of water from the Jfront secs tion.

The entire boiler is preferably provided with a covering ofnonconducting material, the portion of the latter on the front sectionbeing indicated at 30, Figure 7, and the outer ends of the electricalheating elements are insulated by a door 3l provided with a nonconductinlining 32, which may be hinged and locke in position in an suitablemanner, as seen in full lines in igure 7, and in dotted lines in Figure1i. While I have but one electrical heating element in each Water ieg,it will be apparent that more may be em loyed and they may be locatedhigher or ower in the Water le s, as may be desired.

It will be understoo that the casing 15 containing the heating elementis completely immersed in or surrounded by water, as will be understoodfrom Figure 2, and that the electric heating element or unit may beinsorted into or removed from the casing according to requirementswithout disturbing the position of the casing in the boiler, wherebyaburnt out unit can be readily removed Without emptying the Water Voutof the'vvhole heating system, including the boilrevision of the stuffingbox at the front liti 'casingv 15 is located, -Will b e enough largerthan the `outer dimensions of said casing so that-a free circulation ofthe Water to be of sai heated will be permitted at all times around theheater casin and Within the Water legs.

Having thus escribed my invention what I claim as new and desire tosecure by Letters Patent, is

-1. In a device of the character stated, Wa-

ter holding sections, provided with a grate, an electrical heatingelement positioned in said sections, and comprising a casing, surroundedby Water except at its front end, and

` icontaining a core and a resistance coil, a support on one of saidsections for said casing, the outer end of the latter protruding throughthe front lsection and movably secured therein, anda tightitting'closurefor the outer end of said casing.

2. Ina device of the character stated, Water holding sections, providedwith a grate, an electrical heating element positioned in said sections,and comprising a casing, surrounded by Water except at its front end,and containing a core and a resistance coil, a support on one of saidsections :tor said casing, the outer' end of the latter protrudingthrough the front section and movablysecured therein, and a tightfitting closure for the outer end of said casin in combination with agland and packing or'the outer end of said casing.

3. In a device of the character stated, Wa-y ter holdingA sections,provided with a grate, an electrical heating element enclosed in acasing immersed in Water, positioned in saidv sections, and comprising acasingclosed at its .inner end, and containing a core and. a resistancecoil, an'internalsupport on one of. said sections, receiving the innerend of said casing, a stuing boxin the outer Water holdin v section,through which the outer end casing protrudes, a closure for the outerend of said casin having passages therein for the ends of the resistancecoil and pipes on the outer end of said casing composed of insulatingmaterial, through which the terminals of said resistance coil pass.v

4. In a device of the character stated, water holding sections, providedwith a f grate, an electrical heatingv element posif co I tions,receivin tioned in said sections, and comprising a casing immersed inwater, closed at its inner end, and containing a core and a resistancecoil, an internal support on one of said secthe inner endA of saidvcasox in the outer water holdrou h which the outer end of said casingprotru es, a closure for the outer ing, a stutiin end of said casinghaving passages therein for the ends of. the resistance coil and pipeson the outer end of said casing madeof insulating material, lthroughwhich the terininals of said resistance coill pass, in combinationwithan insulating door, covering the end of said heating element.

5. In a device of the character stated, a

sectional boiler composed of front and rear and intermediate sectionshaving water legs, joined by laterally disposed nipples, 1n such amanner as to permit the free circulation of Water in and through thechamber so formed, an electric heating element passand intermediatesections having water legs,`

joined by'laterally disposed nipples, in such a manner as to permit thefree circulation of Water in and through the chamber so formed, anelectric heating element passing through said nipples, and comprisinganouter casing containing a resistance coil, a

.rear section and supA orting the inner end trough shaped shelf n theinterior ofsaid of said casing, a stu ng box in said front sectionthrough which the front of saidcasingpasses, a closure for the front ofsaid casing and a protecting casing for the terlminals of said coil, incombination with an insulated door for closing the frontend of theelectric heatin element.

7. In a device 0%' electric heating element, comprising a metallic tubeclosed at one end, and having a tight fitting. non-conducting plugat-the other end provided with horizontal and vertical channels, a corein said tube, a resistance coil on said core, the terminals of said coilbeing vcontained in said channels and upright pipes on said tube made ofinsulating material through which said terminals pass.'

" 1.8. In apparatus of the character stated,

the character stated, an V liquid, the temperature of which conven-Without said compartment and means for tionally is raised byAcombustion, with an preventing leakage of li uid at the place of`electrical heating element removably intropenetration of said heatmelement.

duced through a Wall of said compartment CHARL S R. KLINE. 5 andimmersed in the liquid contained there- Witnesses: v

in, the terminal orton of 'said heating ele- E. HAYWARD FAIRBANKS,

ment, however, eing located substantially C. D. MGVAY.

